copper pyrites
Americannoun
noun
Etymology
Origin of copper pyrites
First recorded in 1770–80
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
If it contains more than 55% of copper it is directly refined, while if it contains a lower percentage it is smelted with matte or calcined copper pyrites.
From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" by Various
In one case, where the fissure is partially filled up with silica inclosing iron and copper pyrites, gold has also been found in the vein-stone.
From The Student's Elements of Geology by Sir Charles Lyell
It has the refulgency of copper pyrites, of gold, of Florentine bronze.
From The Glow-Worm and Other Beetles by Alexander Teixeira de Mattos
But since about 1860 sulphuric acid has been more largely made from iron or copper pyrites.
From The Project Gutenberg Encyclopedia Volume 1 of 28 by Project Gutenberg
Black above, the Mimic Geotrupes is the colour of copper pyrites below; also black in all parts exposed to the light of day, the Stercoraceous Geotrupes displays a ventral surface of a glorious amethyst violet.
From The Glow-Worm and Other Beetles by Alexander Teixeira de Mattos
Random Word
Spin the wheel and learn a new word!
Get a wordDefinitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
